快递运输包装随机振动信号采集与分析  

Measurement and Analysis of Random Vibration on Express Terminal Delivery Vehicle Based on Hilbert Huang Transform

作　　者：周浩[1] 谭清方[1] 王志伟[2,3,4] ZHOU Hao;TAN Qing-fang;WANG Zhi-wei(Shenzhen Polytechnic,Shenzhen 518000,China;Packaging Engineering Institute,Jinan University,Zhuhai 519070,China;Key Laboratory of Product Packaging and Logistics of Guangdong Higher Education Institutes,Jinan University,Zhuhai 519070,China;Zhuhai Key Laboratory of Product Packaging and Logistics,Jinan University,Zhuhai 519070,China)

机构地区：[1]深圳职业技术学院,深圳518000 [2]暨南大学包装工程研究所,广东珠海519070 [3]暨南大学产品包装与物流广东普通高校重点实验室,广东珠海519070 [4]暨南大学产品包装与物流珠海市重点实验室,广东珠海519070

出　　处：《包装工程》2021年第13期199-204,共6页Packaging Engineering

基　　金：深圳市教育科学规划2020年度课题(ybzz20007);深圳职业技术学院教改项目(7019310031J);广东省教育厅特色创新项目(6020210017K);深圳职业技术学院专创融合示范课程建设项目《网络包装与电子商务》;深圳职业技术学院教学改革项目:高职院校专创融合课程开发与实践——以网络包装与电子商务为例。

摘　　要：目的研究中国南方快递运输包装车辆的随机振动特性,为随机振动试验研究提供理论指导。方法实地采集快递运输包装终端配送车辆在实际工况中遭受的随机振动信号,通过经验模态分解,对各固有模态函数(IMF)的时域、功率谱密度、Hilbert时频谱、Hilbert边际谱等进行分析。结果经验模态分解将运输包装随机振动信号按频率高低依次分解成若干IMF分量,前若干IMF分量代表原始信号中的高频瞬态振动信号,后若干IMF分量代表原始信号中的低频振动信号,进而实现高频与低频振动信号的有效分离。结论希尔伯特-黄变换适用于快递运输包装随机振动信号的分析研究,将在振动信号中间歇性的、加速度幅值较大且持续时间短暂的高频冲击信号进行分离,为运输包装随机振动信号模拟提供新思路,并对产品包装防护设计具有一定的理论指导意义。The work aims to analyze the vibration characteristics of the express transport packaging vehicles in south China to provide theoretical guidance for the research of random vibration test.Vibration signal of one terminal delivery is measured for Hilbert Huang Transform.The instinct mode functions decomposed by empirical mode decomposition method are analyzed in aspects of time domain,power spectral density and Hilbert spectral.Empirical Mode Decomposition decomposes random vibration signals of transport packaging into several IMF components in order of frequency.It is very likely that the first several IMFs represent the high-frequency instantaneous events,while the second several IMFs represent the low-frequency vibration signals of the original signal.Thus,the high frequency and low frequency vibration signals can be separated effectively The results show the applicability of HHT for random vibration on express logistics packaging.The impulsive shock events with big amplitude and short duration,which buried in vibration,can be extracted.

关 键 词：运输包装 希尔伯特-黄变换 随机振动 包装防护 

分 类 号：TB123[理学—工程力学] TH113[理学—力学]